Mathematics 4024 · O Level · Functions

Functions — practice question

Let $f(x) = 3x - 5$ and $g(x) = 2 - 6x$ be given.

(a)[1]

Calculate $f(2)$.

(b)[2]

Solve $g(x) = 18$.

(c)[2]

Calculate $fg(4)$.

(d)[2]

The domain for $g(x)$ is $x > -8$. Determine the range of $g(x)$.

Worked solution & mark scheme

This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$1$ is the value.” …